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Method for preparing hydrothermal biomass charcoal from pecan shells

A technology of biomass charcoal and hickory shell, which is applied in the direction of chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., to achieve the effect of increasing added value and good adsorption performance

Inactive Publication Date: 2015-10-28
ZHEJIANG FORESTRY UNIVERSITY
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Problems solved by technology

At present, there is no better treatment method except incineration

Method used

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  • Method for preparing hydrothermal biomass charcoal from pecan shells
  • Method for preparing hydrothermal biomass charcoal from pecan shells
  • Method for preparing hydrothermal biomass charcoal from pecan shells

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Experimental program
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Embodiment 1

[0018] Embodiment 1 (corresponding embodiment 1 and the proportioning value by weight in contrasting table above), prepare as follows according to the following steps:

[0019] (1) Pecan shells are pulverized into 60-80 order pecan shell powder;

[0020] (2) Preparation of hydrothermal biochar: 100 parts by weight of 60-80 mesh hickory nut shell powder and 10 parts by weight of concentrated hydrochloric acid with a concentration of 37% are placed in 200 parts by weight of water, stirred and mixed evenly at room temperature and placed in In a stainless steel reaction kettle lined with polytetrafluoroethylene, react at 220°C for 8 hours, cool naturally, filter with suction, and wash until neutral to obtain hydrothermal biochar;

[0021] (3) Preparation of activated hydrothermal biochar: mix the hydrothermal biochar obtained in step (2) with 5 parts by weight of inorganic alkali and 220 parts by weight of water, stir at room temperature for 2 hours, suction filter, wash to neutra...

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Abstract

The invention discloses a method for preparing hydrothermal biomass charcoal from pecan shells. The method includes the steps that the pecan shells are smashed into 60-80-mesh pecan shell powder, a hydrothermal reaction is conducted on the pecan shell powder under the strong acid condition, and the hydrothermal biomass charcoal is prepared; the obtained hydrothermal biomass charcoal is activated through inorganic base, and an activated hydrothermal biomass charcoal adsorption material is obtained. The method is simple in technology, low in raw material cost and large in adsorption amount. The prepared adsorption material can be applied to adsorption treatment of cationic dye, and a good treating effect is achieved. According to the method, pecan shell resources are recycled, a low-cost and efficient novel adsorbing agent is obtained, and the development of the environment-friendly event is promoted.

Description

technical field [0001] The invention belongs to the field of preparation of biomass carbon adsorption materials and environmental pollution control, and in particular relates to a production method of hydrothermally carbonizing hickory nut shells as the main material to prepare biomass adsorption materials. Material charcoal preparation method. Background technique [0002] The distribution range of hickory in the whole country is small, mainly distributed in the mountainous areas of northwest Zhejiang and southeastern Anhui, and 70% of them are distributed in Lin'an City, Zhejiang Province. According to preliminary statistics, the annual output of hickory nuts in Lin'an City is about 15,000-30,000 tons, and a large amount of hickory nut shells are produced. At present, there is no better treatment method except incineration. Therefore, there is an urgent need to develop clean and efficient hickory shell resource utilization technology. The hickory shell is used to prepar...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28
Inventor 李兵傅深渊郭建忠林国杭
Owner ZHEJIANG FORESTRY UNIVERSITY
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